Gas-heater for steam-boilers.



W. KANE.

GAS HEATER FOR STEAM BOILERS. APPLIOATION FILED AUG. 20, 1908.

1,002,278. Patented Sept. 5,1911.

WILLIAM KANE, 0F PHILADELPHIA, PENNSYLVANIA.

GAS-HEATER FOR STEAM-BOILERS.

To all whom 'it may concern:

Be it known that I, lVILLIAM KANE, a citizen of the United States, and aresident of the city and county of Philadelphia and State ofPennsylvania, have invented an Improvement in GasHeaters for Steam-Boilers, of which the following is a specification.

My invention has reference to gas heaters for steam boilers and consistsof certain improvements which are fully set forth in the followingspecification and shown in the accompanying drawings.

The object of my invention is to provide means for burning gas as fuelfor heating a steam boiler and causing the temperature to beautomatically controlled by regulating the gas supplied to the burnerunder the control of the steam pressure within the boiler.

My invention consists in providing a steam boiler with a gas burner,combined with a valve to control the supply of gas to the burner, and asteam actuated regulator for cont-rolling the valve to regulate the heatsupplied to the boiler and maintain the boiler pressure substantiallyconstant.

My invention further consists in the above construction when the steamactuated regulator comprises a lever for actuating the valve, adiaphragm and pressure chamber communicating with the boiler foroperating the lever, and a weight for the lever to regulate the amountof pressure necessary to move the valve.

My invention also comprehends details of construction which, togetherwith the features above specified, will be better understood byreference to the drawings, in which:

Figure 1 is an elevation of a steam boiler and means for heating thesame, embodying my invention; and Fig. 2 is a plan view of the lowerpart of the same with the boiler proper removed.

A is the boiler and B is the fire-box or base and which provides aheating chamber.

B is a front or cover-plate, covering an opening B in the front of thebase B and is supported upon lugs B This plate is also provided withvertical slotted portions B to enable the plate B to fit down over theburner C and the igniting nozzle M and thereby prevent the entrance ofair to the upper part of the chamber of the base B. The opening B belowplate B remains Specification of Letters Patent.

Application filed August 20, 1908.

Patented Sept. 5, 1911..

Serial No. 449,389.

open so as to provide the necessary additional air to the mixture of airand gas which pass from the gas burner.

C is the gas burner and may be of any construction desired, it beingadapted to burn a mixture of air and gas in the wellknown manner. D is agas supply pipe for supplying gas to the burner C and C is the airmixing device or nozzle. These parts may be of any suitableconstruction. The gas pipe D connects with the gas supply pipe E througha hand valve G and an automatic regulating valve F, the hand valve beingpreferably between the automatic valve F and the burner C.

P is a standard connecting with the outer end of the gas pipe and D isprovided with a flanged base by which it may be secured to the floor forproperly supporting the several valves and pipes.

L is a branch pipe leading from the gas pipe at any suitable positionbeyond the hand valve Gr and connects with the igniting burner N whichhas a control valve M. This nozzle N provides a flame for igniting thegas mixture from the burner C when the latter is turned on by the handvalve G.

If there is no steam pressure in the boiler, the flame from the burner Cis made a maximum, by turning the hand valve G wide open. If the steampressure rises above a predetermined amount, then the supply of gas isautomatically controlled by the valve F and the regulator I. Theconstruction of this regulator is as follows: A pressure chamber I isformed below a diaphragm I and the said diaphragm is connected with arod 1 which moves vertically to raise and lower a lever H, which ispivoted at one end to the regulator I and at the other end to theregulating stem of the valve F. A weight K is adjustably secured to thelever H, so as to put any desired pressure upon the diaphragm I and fornormally opening the valve F. The regulator I is supported from thefloor by a flanged standard It so that it has a fixed relation with thevalve F. A steam pipe J leased from the boiler to the chamber I of theregulator whereby there is provided a pressure below the diaphragm 1equal to that in the boiler.

It will now be understood that whenever the pressure in the boiler risesabove an amount which is predetermined, the diaphragm I will be raisedand the valve F throttled to reduce the flow of the gas and therebyrestrict the amount of heat given to the boiler so long as the pressuretherein is maintained at or above the normal. If the pressure shouldfall below the normal pressure, then-the weight K will depress thediaphragm I and open the regulating valve F to a greater extent therebysupplying more gas to the burner and consequently increasing the heatingof the boiler to raise its steam pressure. In this manner the apparatusis automatic and there is no danger of explosion from excess of steampressure; and the apparatus, as a whole, is in such simple compact formthat anyone of ordinary intelligence may operate it.

This invention is more particularly useful where small power is requiredfor light manufacturing or other purposes and where more or lessinexperienced persons are re quired to handle the apparatus.

This invention has great advantage from economy in the consumption ofthe gas required to heat the boiler, as no more gas is fed to the burnerthan is actually required to provide the necessary heat to meet theevaporation duty of the boiler at the predetermined pressure. lVhile theeconomy of this method of handling the fuel, produces very economicalresults, it is not the only economical effect obtained. It is well knownthat variation of steam pressure materially shortens the life of aboiler. With this method, however, the tendency must be toward a lesser,never a greater pressure.

In the great majority of cases, where this method would be applicable,the variation of pressure would not change more than one pound at anytime during its application. 011 this account there would scarcely beany limit to the life of a well constructed boiler.

Having now described my invention What l claim as new and desire tosecure by Letters Patent, is:

The combination of a steam boiler, a gas burner for heating the same, agas main for supplying gas to the burner, a hand valve in said gas main,an automatic regulating valve also in said gas main, an automatic steamactuated regulator out of alinement with the regulating valve foroperating the said. regulating valve to reduce the supplying of gas tothe burner whenever the steam pressure in the boiler exceeds apredetermined amount, operative connecting means extending laterallybetween the regulating valve and steam actuated regulator, andindependent standards having fianged bases for separately supporting theregulating device and the gas main from the floor whereby a fixedrelation is had between the regulating device and the automatic'regulating valve.

In testimony of which invention, I have hereunto set my hand.

VILLIAM KANE. WVitnesses:

R. M. HUNTER, R. M. KELLY.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

' Washington, D. G.

